Another factor in buying without a bathroom is that you are going to get older.
What works for you now may not work so well later.

I'm alread old, you mean it gets worse? Beats the alternative, I guess.

My wife and I spent a few decades backpacking, moved to car camping, then the T@B, and probably an Escape. We don't agree about much; but "I'm not cleaning or living with the #$%^ing the thing" is something we can agree on.

I didn't mean to divert the thread. Edgar has a very nice trailer. If the features match what you want, you should be able to work something out.

One could also figure out a way to utilize a plastic bag in the toilet (without flushing it of course), and have the privacy, convenience and not have to deal with the cleaning. Also a tightly sealed container until the bags could be dumped would be helpful.
However, if one is careful, there is not much to the cleaning. Using good toilet preparations;gray water flushing and the ice cube wash has worked well for me.